National Natural Science Foundation of China (NSFC)
31625009
中国
引用
ジャーナル: Biochem Biophys Res Commun / 年: 2021 タイトル: Cryo-EM structures of LptBFG and LptBFGC from Klebsiella pneumoniae in complex with lipopolysaccharide. 著者: Qingshan Luo / Huigang Shi / Xueqing Xu / 要旨: Lipopolysaccharide (LPS) is an essential component of the outer membrane (OM) in most Gram-negative bacteria. LPS transport from the inner membrane (IM) to the OM is achieved by seven ...Lipopolysaccharide (LPS) is an essential component of the outer membrane (OM) in most Gram-negative bacteria. LPS transport from the inner membrane (IM) to the OM is achieved by seven lipopolysaccharide transport proteins (LptA-G). LptBFG, an type VI ATP-binding cassette (ABC) transporter, forms a stable complex with LptC, extracts LPS from the IM and powers LPS transport to the OM. Here we report the cryo-EM structures of LptBFG and LptBFGC from Klebsiella pneumoniae in complex with LPS. The KpLptBFG-LPS structure provides detailed interactions between LPS and the transporter, while the KpLptBFGC-LPS structure may represent an intermediate state that the transmembrane helix of LptC has not been fully inserted into the transmembrane domains of LptBFG.
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2021年3月22日
登録サイト: PDBJ / 処理サイト: PDBJ
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2022年3月2日
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2022年3月2日
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2024年6月5日
Group: Data collection / カテゴリ: chem_comp_atom / chem_comp_bond
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A: Lipopolysaccharide export system ATP-binding protein LptB B: Lipopolysaccharide export system ATP-binding protein LptB F: Lipopolysaccharide export system permease protein LptF G: LPS export ABC transporter permease LptG ヘテロ分子